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Method for producing soft pack batteries based on measurable battery internal temperature device

A technology of internal temperature and pouch battery, which is applied in the direction of measuring devices, electrolyte storage battery manufacturing, and electrical devices, and can solve problems such as errors

Active Publication Date: 2017-05-24
SHANDONG YUHUANG NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Since most of the existing test methods for the heat of reaction of batteries are limited to using tools such as thermistors on the surface of pouch batteries, the surface temperature of pouch batteries is tested under adiabatic conditions to estimate the distribution of the heat of reaction of the battery. This method has hysteresis and considerable big error

Method used

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  • Method for producing soft pack batteries based on measurable battery internal temperature device
  • Method for producing soft pack batteries based on measurable battery internal temperature device
  • Method for producing soft pack batteries based on measurable battery internal temperature device

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Embodiment

[0046] The invention provides a pouch battery manufacturing method based on a device that can accurately measure the internal temperature of the battery. After the short-circuit test of the test device is completed, it needs to be baked and dried. The drying parameters are: baking temperature 80°C, vacuum baking time 12h, Nitrogen was changed every 2 hours. For core package 6, laminated core package 6 is selected as the carrier. Here, a lithium iron phosphate type (wet-mixed ingredient) soft-pack laminated battery using internal model 50200125-EV10Ah technology is selected. The used core package should be dried at room temperature and humidity. ≤20% of the environment for assembly.

[0047] Such as image 3 As shown, the thermistor 5 is embedded in the thermistor embedding hole 3 of the corresponding circuit board 4 , and the paths of each thermistor 5 are tested to ensure the smoothness of the circuit board 4 . The size of the circuit board 4 and the number of thermistor in...

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Abstract

The invention relates to the technical field of battery production, and in particular relates to a method for producing soft pack batteries based on a measurable battery internal temperature device. The method for producing soft pack batteries based on the measurable battery internal temperature device takes a test component and a main battery body as a basic device, and is characterized by comprising the following steps of: assembling the test component by encapsulating a thermistor with a double-circuit board, carrying out a path test, and then carrying out surface insulation treatment and drying treatment; assembling a battery core package by encapsulating the test component with a double-core, or inserting the test component into a single core package, then baking, and carrying out a short-circuit test; and combining the core packages and then entering a shell, carrying out top side sealing according to the thickness of a bare battery core, then carrying out hot and cold pressure, testing temperature data numbers, namely, correspondingly leading to a number obtained after a lead is matched with the thermistor, and carrying out data linearized processing. The method provided by the invention has the advantages that the vertical and horizontal positions of the whole test component in the core package can be flexibly adjusted, and the temperature of positive and negative plates at different depths inside the battery can be flexibly tested according to needs.

Description

[0001] (1) Technical field [0002] The invention relates to the technical field of battery production, in particular to a method for making a pouch battery based on a device capable of measuring the internal temperature of the battery. [0003] (2) Background technology [0004] Single lithium ion soft pack battery is composed of positive electrode, negative electrode, separator, electrolyte and aluminum plastic film. Due to the characteristics of the structure of the pouch battery, the main body of the battery is relatively soft, and there are irregular aluminum-plastic film packaging edges. The cooling and heat dissipation of the battery cannot be carried out directly, and the support of the external shape is required. Therefore, the thermal structure design of the pouch battery needs to be regular. The optimization of the heat sink structure requires more accurate data on the heat distribution of the battery pack, so the measurement of the heat distribution of the soft pack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/48G01K7/22
CPCG01K7/22H01M10/058H01M10/486Y02E60/10Y02P70/50
Inventor 曹建建窦燕蒙王瑛赵成龙薛嘉渔
Owner SHANDONG YUHUANG NEW ENERGY TECH
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